3Com S7906E - Switch, Configuration Manual

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1-7
z
All ports that connect service provider devices and customer devices and those that interconnect
service provider devices are trunk ports and allow packets of any VLAN to pass through.
z
PVST is enabled for VLANs 1 through 4094 on User A’s network. It is required that, after the
configuration, CE 1 and CE 2 implement consistent PVST calculation across the service provider
network, and that the destination multicast MAC address carried in BPDUs be
0x0100-0CCD-CDD0.
Figure 1-4 Network diagram for configuring BPDU tunneling for PVST
Configuration procedure
1) Configuration on PE 1
# Configure the destination multicast MAC address for BPDUs as 0x0100-0CCD-CDD0.
<PE1> system-view
[PE1] bpdu-tunnel tunnel-dmac 0100-0ccd-cdd0
# Configure GigabitEthernet 2/0/1 as a trunk port and assign it to all VLANs.
[PE1] interface gigabitethernet 2/0/1
[PE1-GigabitEthernet2/0/1] port link-type trunk
[PE1-GigabitEthernet2/0/1] port trunk permit vlan all
# Disable STP on GigabitEthernet 2/0/1, and then enable BPDU tunneling for STP and PVST on it.
[PE1-GigabitEthernet2/0/1] undo stp enable
[PE1-GigabitEthernet2/0/1] bpdu-tunnel dot1q stp
[PE1-GigabitEthernet2/0/1] bpdu-tunnel dot1q pvst
2) Configuration on PE 2
# Configure the destination multicast MAC address for BPDUs as 0x0100-0CCD-CDD0.
<PE2> system-view
[PE2] bpdu-tunnel tunnel-dmac 0100-0ccd-cdd0
# Configure GigabitEthernet 2/0/2 as a trunk port and assign it to all VLANs.
[PE2] interface gigabitethernet 2/0/2
[PE2-GigabitEthernet2/0/2] port link-type trunk
[PE2-GigabitEthernet2/0/2] port trunk permit vlan all
# Disable STP on GigabitEthernet 2/0/2, and then enable BPDU tunneling for STP and PVST on it.
[PE2-GigabitEthernet2/0/2] undo stp enable
[PE2-GigabitEthernet2/0/2] bpdu-tunnel dot1q stp
[PE2-GigabitEthernet2/0/2] bpdu-tunnel dot1q pvst